Dolphin

Dolphin Jumping and playing Dolphins occasionally leap above the water surface, and sometimes perform acrobatic figures (for example, the spinner dolphin). Scientists are not certain about the purpose(s) of the acrobatics. Possibilities include locating schools of fish by looking at above-water signs like feeding birds, communicating with other dolphins, dislodging parasites or simple amusement. Play is an important part of dolphin culture. Dolphins play with seaweed and play-fight with other dolphins. At times they harass other local creatures, like seabirds and turtles. Dolphins enjoy riding waves and frequently surf coastal swells and the bow waves of boats, at times “leaping” between the dual bow waves of a moving catamaran. Occasionally, they playfully interact with swimmers. Captive dolphins have been observed in aquariums engaging in complex play behavior which involves the creation and manipulation of bubble rings.

Moon

The Moon is the only natural satellite of the Earth,[nb 4][7] and the fifth largest satellite in the Solar System. It is the largest natural satellite of a planet in the Solar System relative to the size of its primary, having a quarter the diameter of Earth and 1⁄81 its mass.[nb 5] The Moon is the second densest satellite after Io, a satellite of Jupiter. It is in synchronous rotation with Earth, always showing the same face; the near side is marked with dark volcanic maria among the bright ancient crustal highlands and prominent impact craters. It is the brightest object in the sky after the Sun, although its surface is actually very dark, with a similar reflectance to coal. Its prominence in the sky and its regular cycle of phases have, since ancient times, made the Moon an important cultural influence on language, calendars, art and mythology. The Moon's gravitational influence produces the ocean tides and the minute lengthening of the day. The Moon's current orbital distance, about thirty times the diameter of the Earth, causes it to appear almost the same size in the sky as the Sun, allowing it to cover the Sun nearly precisely in total solar eclipses.

Mountains

Fault-block mountains Blue Ridge Mountains in Shenandoah National Park, Virginia, USA Block mountains are created when large areas are widely broken up by faults creating large vertical displacements. This occurrence is fairly common. The uplifted blocks are block mountains or horsts. The intervening dropped blocks are termed graben: these can be small or form extensive rift valley systems. This form of landscape can be seen in East Africa, the Vosges, the Basin and Range province of Western North America and the Rhine valley. These areas often occur when the regional stress is extensional and the crust is thinned. Rock that does not fault may fold, either symmetrically or asymmetrically. The upfolds are anticlines and the downfolds are synclines: in asymmetric folding there may also be recumbent and overturned folds. The Jura Mountains are an example of folding. Over time, erosion can bring about an inversion of relief: the soft upthrust rock is worn away so the anticlines are actually lower than the tougher, more compressed rock of the synclines.

Mountain

Mountain Chimborazo, Ecuador, the point farthest from the center of the Earth. The Matterhorn, Swiss Alps The view of Jeff Davis Peak from the glacier-carved summit of Wheeler Peak, Nevada. Because Boundary Peak, Nevada is partially in California, and is actually a sub-peak of Montgomery Peak, the shorter Wheeler Peak can be considered the tallest mountain in Nevada. Mountain in Carbon County, Utah Mount Olympus in Greece The Himalayan mountain range with Mount Everest

Dolphin

Jumping and playing

Dolphin Jumping and playing Pacific white-sided dolphins porpoising Dolphins occasionally leap above the water surface, and sometimes perform acrobatic figures (for example, the spinner dolphin). Scientists are not certain about the purpose(s) of the acrobatics. Possibilities include locating schools of fish by looking at above-water signs like feeding birds, communicating with other dolphins, dislodging parasites or simple amusement. Play is an important part of dolphin culture. Dolphins play with seaweed and play-fight with other dolphins. At times they harass other local creatures, like seabirds and turtles. Dolphins enjoy riding waves and frequently surf coastal swells and the bow waves of boats, at times “leaping” between the dual bow waves of a moving catamaran. Occasionally, they playfully interact with swimmers. Captive dolphins have been observed in aquariums engaging in complex play 

Dolphin Jumping and playingDolphin
Jumping and playing

Parts of the Sun

From here on Earth, the Sun like a smooth ball of fire, and before the discovery of sunspots by Galileo, astronomers even thought it was a perfect orb with no imperfections. However, we now know that the Sun, like Earth, is actually made up of several layers, each of which serves its own purpose. It’s this structure of the Sun that powers this massive furnace and provider of all terrestrial life and energy.

What is the Sun Made Of? If you could take the Sun apart, and stack up its various elements, you would find that the Sun is made of hydrogen (74%) and helium (about 24%). Astronomers consider anything heavier than helium to be a metal. The remaining amount of the Sun is made of iron, nickel, oxygen, silicon, sulfur, magnesium, carbon, neon, calcium and chromium. In fact, the Sun is 1% oxygen; and everything else comes out of that last 1%. Supernova remnant SNR 0509-67.5. Supernovae provided the heavier elements in the Sun. Image credit: NASA/ESA/CXC Supernova remnant SNR 0509-67.5. Supernovae provided the heavier elements in the Sun. Image credit: 

Where did these elements come from? The hydrogen and helium came from the Big Bang. In the early moments of the Universe, the first element, hydrogen, formed from the soup of elementary particles. The pressure and temperatures were still so intense that the entire Universe had the same conditions as the core of a star. Hydrogen was fused into helium until the Universe cooled down enough that this reaction couldn’t happen any more. The ratios of hydrogen and helium that we see in the Universe today were created in those first few moments after the Big Bang. The other elements were created in other stars. Stars are constantly fusing hydrogen into helium in their cores. Once the hydrogen in the core runs out, they switch to fusing heavier and heavier elements, like helium, lithium, oxygen. Most of the heavier metals we see in the Sun were formed in other stars at the end of their lives.

Watergate scandal

"Watergate" redirects here. For other uses, see Watergate (disambiguation).

Watergate
v t e

The Watergate scandal was a political scandal that occurred in the United States in the 1970s as a result of the June 1972 break-in at the Democratic National Committee headquarters at the Watergate office complex in Washington, D.C., and the Nixon administration's attempted cover-up of its involvement. The scandal eventually led to the resignation of Richard Nixon, the President of the United States, on August 9, 1974, the only resignation of a U.S. President. The scandal also resulted in the indictment, trial, conviction and incarceration of 43 people, including dozens of top Nixon administration officials.

"Watergate" redirects here. For other uses, see Watergate (disambiguation). Watergate The Watergate Building Events Timeline "White House horrors" 1972 presidential election Watergate burglaries White House tapes "Saturday Night Massacre" United States v. Nixon Inauguration of Gerald Ford People Watergate Burglars: James McCord Bernard Barker Frank Sturgis Virgilio Gonzalez Eugenio Martinez Committee to Re-Elect the President: Jeb Magruder John N. Mitchell Robert Mardian Fred LaRue Kenneth Parkinson Maurice Stans The White House: John Dean E. Howard Hunt Egil Krogh G. Gordon Liddy John Ehrlichman H. R. Haldeman Charles Colson Gordon C. Strachan Alexander Butterfield Richard Nixon Judicial: Archibald Cox Leon Jaworski John Sirica Journalists: Carl Bernstein Bob Woodward Intelligence Community: Richard Helms James Schlesinger L. Patrick Gray W. Mark Felt ("Deep Throat") Groups Committee for the Re-Election of the President (CRP) "White House Plumbers" Senate Watergate Committee The Washington Post * v * t * e The Watergate scandal was a political scandal that occurred in the United States in the 1970s as a result of the June 1972 break-in at the Democratic National Committee headquarters at the Watergate office complex in Washington, D.C., and the Nixon administration's attempted cover-up of its involvement. The scandal eventually led to the resignation of Richard Nixon, the President of the United States, on August 9, 1974, the only resignation of a U.S. President. The scandal also resulted in the indictment, trial, conviction and incarceration of 43 people, including dozens of top Nixon administration officials. The affair began with the arrest of five men for breaking and entering into the Democratic National Committee (DNC) headquarters at the Watergate complex on June 17, 1972. The Federal Bureau of Investigation (FBI) connected cash found on the burglars to a slush fund used by the Committee for the Re-Election of the President, a fundraising group for the Nixon campaign.[1][2] In July 1973, as evidence mounted against the president's staff, including testimony provided by former staff members in an investigation conducted by the Senate Watergate Committee, it was revealed that President Nixon had a tape-recording system in his offices and he had recorded many conversations.[3][4] Recordings from these tapes implicated the president, revealing he had attempted to cover up the break-in.[2][5] After a protracted series of bitter court battles, the U.S. Supreme Court ruled that the president had to hand over the tapes to government investigators; he ultimately complied. Facing near-certain impeachment in the House of Representatives and a strong possibility of a conviction in the Senate, Nixon resigned the presidency on August 9, 1974.[6][7] His successor, Gerald Ford, then issued a pardon to Nixon.